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Re: [grouper-dev] DB problem - some broken groups - help appreciated.

Chronological Thread 
  • From: Shilen Patel <>
  • To: "Gettes, Michael" <>, "" <>
  • Subject: Re: [grouper-dev] DB problem - some broken groups - help appreciated.
  • Date: Fri, 31 May 2019 18:43:39 +0000

Have you tried to run findBadMemberships()? Depending on what the group set
issue is, that may or may not help.

- Shilen

On 5/31/19, 1:43 PM, " on behalf of Gettes,
Michael" < on behalf of >

I’m trying to decipher the error presented…

Caused by: java.sql.BatchUpdateException: Cannot delete or update a
parent row: a foreign key constraint fails (`grouper`.`grouper_group_set`,
CONSTRAINT `fk_group_set_member_group_id` FOREIGN KEY (`member_group_id`)
REFERENCES `grouper_groups` (`id`))

I read this to imply there is a value in
grouper_group_set.member_group_id that is not in
To prove, I ran a right outer join to find what’s in group_set that is
not in groups
select * from grouper.grouper_group_set gs
right join grouper.grouper_groups g
on gs.member_group_id =
where gs.member_group_id = null

and got 0 records returned.

i am not sure where the problem is - any guidance?

> On May 31, 2019, at 11:16 AM, Gettes, Michael <> wrote:
> Hi all,
> I have a condition of about a dozen groups which cannot be modified or
deleted and the log snippet attached shows the error log for one of these
groups. First, I’d like to know how I fix these groups. Second, the
condition of how this occurred I am still trying to prove but it seems to be
related to whether or not memory is configured with ms=mx. I haven’t been
able to recreate what caused the condition in the log snippet but the log
snippet with ms=mx devolves into Garbarge collection failures and the loader
becoming unusable over time. With ms<mx (8g<9g) the errors i see in the log
snippet do not cause the loader to become unusable over time. Anyway, I’d
really appreciate help fixing the bad groups based on the log.
> I decided not to post this to the grouper-users list because I don’t
want people thinking grouper is unstable and this could happen to them. As
you guys know, i have been doing some extreme things with grouper to see
what’s possible and find issues and i think these “broken groups” are related
to that work and the various memory problems I was having.
> Thank you!
> /mrg
> <20190531-grouper-error.log>

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